/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.bpmn.listener;

import com.je.bpm.engine.ActivitiIllegalArgumentException;
import com.je.bpm.engine.delegate.CustomPropertiesResolver;
import com.je.bpm.engine.delegate.DelegateExecution;
import com.je.bpm.engine.delegate.Expression;
import java.util.Map;

public class DelegateExpressionCustomPropertiesResolver implements CustomPropertiesResolver {

    protected Expression expression;

    public DelegateExpressionCustomPropertiesResolver(Expression expression) {
        this.expression = expression;
    }

    @Override
    public Map<String, Object> getCustomPropertiesMap(DelegateExecution execution) {
        // Note: we can't cache the result of the expression, because the
        // execution can change: eg.
        // delegateExpression='${mySpringBeanFactory.randomSpringBean()}'
        Object delegate = expression.getValue(execution);

        if (delegate instanceof CustomPropertiesResolver) {
            return ((CustomPropertiesResolver) delegate).getCustomPropertiesMap(execution);
        } else {
            throw new ActivitiIllegalArgumentException("Custom properties resolver delegate expression " + expression + " did not resolve to an implementation of " + CustomPropertiesResolver.class);
        }
    }

    /**
     * returns the expression text for this execution listener. Comes in handy if you want to check which listeners you already have.
     */
    public String getExpressionText() {
        return expression.getExpressionText();
    }

}
